最新刊期
      卷 ， 期 6 ， 1996
      • Xu Daming Wang Xiaojing Li Shaomin Li Qingchun
        Issue 6, Pages: 1-6(1996)
        摘要：The continuum model and numerical solution method proposed by the authors were ap- plied to the directional solidification processes of blade-like castings.Numerical simulation of the tem- perature,solid fraction and solutional concentration distributions and the pressure and velocity fields of liquid phase flow in the directional solidification of blade-shaped model castings were performed.With a software system of BSTVCCAL developed by the authors,the influences of different kinds of varying technological parameters,such as varying withdrawal velocity V（t） and varying heating temperature Ttt （t）,on the dendrite structure variations and macrosegregations in the modeled blade castings were stud- ied at the aim for obtaining an optimal technological design for a directional solidification process of blades.  
        关键词：Blade Directional Solidification;Solidification Phenomena;Transport Macrosegregation;Numerical Simulation;Process CAD   
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        发布时间：2023-12-18
      • Wei Xiaowei
        Issue 6, Pages: 7-9(1996)
        摘要：The influence of Cd content in Al-Cu cast alloy on its microstructure and distribution has been studied.The results show that,if Cd is less than 0.3%,it will be distributed well,θ″and θ′phas- es will be fine and uniform when the alloy is aged at 175 C,if not,it will be concentrated with its con- tent raised,θ″ and θ′phases will be increased in size and interval at the same ageing temperature,but decreased in quantity.  
        关键词：Cd;AI-Cu Cast Alloy;Distribution;Microaction   
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        发布时间：2023-12-18
      • Zhou Shuwen Huang Bojian Zhou Jun
        Issue 6, Pages: 10-11(1996)
        摘要：This paper reports the influence of the partial solar eclipse on Dec.24 th,1992 on the so- lidification of a Pb-Sn alloy.It has been found that the crystal structure of the Pb-Sn alloy presented an oriented arrangment during its solidification and its conductivity increased 5% as the results of solar e- clipse.  
        关键词：Solar Eclipse;Solidification;Oriented Arrangement   
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      • Issue 6, Pages: 6-18(1996)
        摘要：<正> 1996年9月23日是我国著名的铸造和材料专家李庆春教授70寿辰。纪念李庆春教授从事教学、科研工作45周年暨70华诞活动于9月20～22日在哈尔滨工业大学隆重举行。活动由召开"金属凝固及新材料、新工艺"学术报告会和出版《金属凝固及新材料》论文集等内容组成。李庆春教授不同时期的弟子60余人参加了学术报告会。李庆春教授做了"快速凝固铝合金材料制备技术与性能"的报告,清华大学吴德海教授做了"碳60工程材料的研究"和"贝氏体球铁抗磨材料"的特邀报告,还有22篇论文进行了宣读和交流。为纪念导师70寿辰,李庆春教授海内外弟子自筹资金组织出版了《金属凝固及新材料》一书,该书选编了  
          
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        发布时间：2023-12-18
      • Li Decheng Chao Yingjie Zhang Zhaowen Li Yusheng Shen Guirong
        Issue 6, Pages: 12-13(1996)
        摘要：Tension test specimen and its filling and feeding system of nationl standard specification for casting AI alloy are redesigned.Solidification of the redesigned tension test specimen was simulated with computer.The specimen has been used in large scale commercial production of casting A1 alloy since 1994.The result show that the redesigned specimen is reasonable,thus could be bring into the new casting A1 alloy standard system,and popularized in the field of casting A1 alloy.  
          
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        发布时间：2023-12-18
      • Yu Haipeng Zhang Fuqiang Yin Jingtian
        Issue 6, Pages: 14-18(1996)
        摘要：To reduce the tendency to produce defects,such as microporosity and segregation,in tra- ditional gravity casting,a squeeze casting ZA27 alloy process was investigated.The relation between process parameters of squeeze casting and properties of ZA27 alloy has shown that squeeze process can improve the density and mechanical properties of ZA27 effectively.A higher strength and a higher toughness can be obtained by controlling the process parameters.  
        关键词：Squeeze Casting;ZA27 Alloy;Process Parameter;Density;Mechanical Property   
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        发布时间：2023-12-18
      • Wang Zhongke Haang Naiyu
        Issue 6, Pages: 19-22(1996)
        摘要：Testing technique of strength and deiormation resistance ot EPC coating was discussed. Some factors affecting coating strength,such as refractory and binder,were studied.The deformations （deflection value） of the patterns with different coatings were measured under different loads.The ex- perimental results show that the coating has higher strength contained PVA organic binder than con- tained colloidal silica inorganic binder at room temperature.Increasing properly coating thickness is helpful to resist the pattern deformation.  
        关键词：Evaporating Pattern Casting;Coating Strength;Deformation Resistance   
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        发布时间：2023-12-18
      • Zhang Weishan Xiong Shoumei Liu Baicheng
        Issue 6, Pages: 23-24(1996)
        摘要：A new model based on finite difference method （FDM） has been developed to simulate 3- D temperature field of die casting and deal with complicated water cooling and/or oil heating lines.Fur- thermore,a new concept so called"transient layer"was used to decrease more than 50% computation time.  
        关键词：Die Casting;Temperature Field;Numerical Simulation   
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        发布时间：2023-12-18
      • Li Zhenghua Wei Huasheng Ji Shouxun Tang Jun Yang Guozhu
        Issue 6, Pages: 25-27(1996)
        摘要：With the help of computer soft/hardware technology as well as theory and experience of die cating,a CAD software suited for designing gating system of hot/cold chamber machine has been de- veloped.Determining process plan and calculating relative date,a drawing can be generated automatical- ly by this software.This software is named DCDDI.  
        关键词：Die Casting Die;Gate System;CAD   
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        发布时间：2023-12-18
      • Jiang Buju Yan Shuangjing
        Issue 6, Pages: 28-32(1996)
        摘要：Several important problems related to ceramic shell used silica sol as binder were studied in order to raise technical level of the shell making and improve quality of the castings.  
        关键词：Silica Sol;Shell Making Technology;Casting Quality   
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        发布时间：2023-12-18
      • Du Longyou Gu Xinghua Zhao Zhiqiang Yao Xifan
        Issue 6, Pages: 33-34(1996)
        摘要：Requirements of drive system and productive characteristic of horizontal centrifugal cast- ing machine with duad casting moulds are narrated.Structure and main characteristics of drive system are especially analysed.  
        关键词：Horizontal Centrifugal Casting Machine;Duad Casting Mould;Gyro Wheel Drive   
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        发布时间：2023-12-18
      • Huang Xingbo Zhao Wen
        Issue 6, Pages: 35-36(1996)
        摘要：The effect of JGJ-3 refining agent containing RE on refining A1-Cu alloy has been studied. The results show that this smokeless,smellless and nonpoisonous refining agent can replace hex- achloroethane to be used in Al-alloy effectuately,and the casting with grade-1 pinhole can be obtained.  
        关键词：Rare-Earth;Al-Cu Alloy;Refining   
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        发布时间：2023-12-18
      • Wang Yizhi
        Issue 6, Pages: 37-42(1996)
        摘要：The academic thesis from the 18th North America Die Casting Association International die casting congress are presented in 8 aspects.Model and Simulating method,Production Run and Manufacture Technology,Die Materical,Semisolid Casting,Squeeze Casting,A1 Alloy,Mg Alloy and Zn Alloy.  
        关键词：North America Die Casting Association;International Congress;Thesis   
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        发布时间：2023-12-18
      • Tong Mingduo
        Issue 6, Pages: 43(1996)
        摘要：In this paper,it is explained why calculating running speed of centrifugal casting machine is based upon gravity coefficient and how formula is called.  
        关键词：Centrifugal Casting;Calculating Running Speed;Gravity Coefficient;Formula   
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        发布时间：2023-12-18
      • Zhang Chunyong
        Issue 6, Pages: 44(1996)
        摘要：<正> 叶片（见图1）是航空发动机的关键零件。叶片材料多为不锈钢或高温合金,这些材料很难加工。所以,叶片要求无余量精密铸造。精铸叶片合格与否,蜡模压型很关键;设计此压型时如何放缩又是"关键的关键"。 1 综合收缩率的确定压型型腔尺寸与铸件尺寸的关系式为:L—KL0=（1+C）L0 （1）式中 L——型腔尺寸L0——铸件尺寸K——放缩系数C——综合收缩率L0值由零件图纸给定（已知）,L 值随 C 值的确定而定。影响 C 值的因素很多:有主、辅材料因素,有零件结构因素以及一系列工艺参数,影响因素多且复杂。我们称 C 为综合收缩率,在没有系统研究每种因素对 C值影响的情况下,可以从生产实践中统计 C 值,C 的值域在—1%到+4%之间。就叶片而言,C 的峰值在2.3%到2.4%之间,我们多用2.32%。由此,（1）式可写为:  
          
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        发布时间：2023-12-18
      • Issue 6, Pages: 45(1996)
        摘要：<正> 布勒在准备发展一些新机器之前,项目工作小组曾问过客户们,你们对一个新的实时调控的压铸机有何期望?他们最常用的回答是:"机器必须要让员工容易操作并能符合逻辑地被使用。"任何人想进一步熟悉这台新机器时,立刻从这儿感觉到了"容易应用"的含义。在客户购买为工业生产所需要的资本货品时,"容易操作"已经成为客户最重要的获益。在不久前,"容易操作"还不是一个决定性的准则。那时候,机器或设备只要能满足客户所要求的功能,那么,对于操作的困难程度并无人介意。因为有固定的人员成年只操作此一台机器,故也就允许操作人员花一些时间去学习操作。这种情形已显著的改变了。为了让操作员能灵活地使用不同的机器,要求员工在尽短的时间内学会操作,能轻松地使用一台刚投资购买的新机器,做到准确使用、熟练无误才行。  
          
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        发布时间：2023-12-18
      • Issue 6, Pages: 46(1996)
        摘要：<正> 1983年富来公司推出的世界上第一台由计算机控制的压铸机,它是压铸机进入电脑时代的标志。DATAMAT——这是富来压铸机原最基本的控制设备。它可将压铸机运行的各种参数分别显示在17个不同的画页上。压力、速度和行程手动设定。其他如:时间、程序选择、第二、第三级压射起点等,都可用 OATASAFE 卡（数据存储卡）进行输入或记录。所有数据都能打印成文件。各种接口可连接周边自动化附属设备。统一控制。自检和故障处理系统直接通告设备的运行状态和故障点,更有利于维护和检修。该系统可直接并入富来公司的 BDE中央数据处理系统。随着控制系统的不断改进和发展.该控制系统于1996年6月被淘汰。DATAVARIO——现为富来压铸机基本控制设备。除 DATAMAT 所有功能外,以曲线形式显示每次压射过程的参数。它的  
          
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      • Issue 6, Pages: 47(1996)
        摘要：<正> 派罗特克（PYROTEK）公司开发出了一系列的精炼剂喷射设备,以满足铝铸造业的需求,改善合金质量,降低操作成本。这些设备是:PAL F·I·30这一设备安装在小车上,可以在炉子间移动。它和石墨喷枪或除渣管配套,可用于间歇式小型保温炉。它可装13.62kg（30磅）精炼剂固,定的精炼剂喷射速率为每 min 0.11kg.0.23kg或0.91kg（1/4磅,1/2磅或2磅）。PAL F·I·60这也是安装在小车上和石墨喷枪及除渣管配套,可用于大型反射炉和保温炉,固定的精炉剂喷射速率为每min 0.91kg.1.82kg 或2.72kg（2磅。4磅或6磅）。可装27.24kg（60磅）精炼剂。  
          
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      • Issue 6, Pages: 50(1996)
        摘要：<正> 厦门象屿新金洋进出口有限公司位于厦门象屿保税区内,专营各种进口精密铸造原辅材料及抛光材料。主要产品牌号及规格如下:  
          
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      • Vol. 0, Issue 6, Pages: 53-54(1996)
          
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